SigarExposer.java

/*
 * ProActive Parallel Suite(TM):
 * The Open Source library for parallel and distributed
 * Workflows & Scheduling, Orchestration, Cloud Automation
 * and Big Data Analysis on Enterprise Grids & Clouds.
 *
 * Copyright (c) 2007 - 2017 ActiveEon
 * Contact: contact@activeeon.com
 *
 * This library is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation: version 3 of
 * the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * If needed, contact us to obtain a release under GPL Version 2 or 3
 * or a different license than the AGPL.
 */
package org.ow2.proactive.resourcemanager.node.jmx;

import java.io.File;
import java.net.ServerSocket;

import javax.management.MBeanServer;
import javax.management.ObjectName;

import org.apache.commons.io.FileUtils;
import org.apache.log4j.Logger;
import org.hyperic.sigar.jmx.SigarRegistry;
import org.ow2.proactive.jmx.AbstractJMXHelper;
import org.ow2.proactive.resourcemanager.core.properties.PAResourceManagerProperties;
import org.ow2.proactive.resourcemanager.utils.RRDSigarDataStore;


public class SigarExposer extends AbstractJMXHelper {
    /** A property to override the dir that contains the monitoring db file */
    public static final String MONITORING_DB_DIR = "proactive.node.monitoring.db.dir";

    private static final Logger LOGGER = Logger.getLogger(SigarExposer.class);

    private final String nodeName;

    public SigarExposer(String nodeName) {
        super(LOGGER);
        this.nodeName = nodeName;
    }

    public void registerMBeans(MBeanServer mbs) {
        try {
            // Create the SIGAR registry
            SigarRegistry registry = new SigarRegistry();

            ObjectName name = new ObjectName(registry.getObjectName());
            if (!mbs.isRegistered(name)) {
                mbs.registerMBean(registry, name);
            }

            String databaseFolder = System.getProperty(MONITORING_DB_DIR);
            if (databaseFolder == null || databaseFolder.trim().isEmpty()) {
                String fs = System.getProperty("file.separator");
                databaseFolder = PAResourceManagerProperties.RM_HOME.getValueAsString() + fs + "data" + fs;
            }

            FileUtils.forceMkdir(new File(databaseFolder));
            String dataBaseName = databaseFolder + nodeName + "_statistics.rrd";

            setDataStore(new RRDSigarDataStore(mbs,
                                               dataBaseName,
                                               PAResourceManagerProperties.RM_RRD_STEP.getValueAsInt(),
                                               Logger.getLogger(SigarExposer.class)));

            name = new ObjectName("sigar:Type=Processes");
            SigarProcessesMXBean processes = new SigarProcesses(dataBaseName);
            if (!mbs.isRegistered(name)) {
                mbs.registerMBean(processes, name);
            }

        } catch (Exception e) {
            LOGGER.error("Unable to register SigarRegistry mbean", e);
        }
    }

    @Override
    public String getConnectorServerName() {
        return "rmnode";
    }

    @Override
    public int getJMXRMIConnectorServerPort() {
        ServerSocket server;
        try {
            server = new ServerSocket(0);
            int port = server.getLocalPort();
            server.close();
            return port;
        } catch (Exception e) {
            LOGGER.error("", e);
        }

        // in worst case try to return a random port from the range 5000-6000
        return (int) (5000 + (Math.random() * 1000));
    }
}